With the magnetic stick balls can be reached and recorded even in difficult places of the ball track.By the magnetic tip of the Accessory Magnetic Stick, the silver and colored GraviTrax balls are attracted as if by a magic hand. Before the first use, it can be easily assembled. In addition, the set also contains a silver ball for greater fun of the ballGraviTrax is a flexible, interactive ball track system for children aged 8 and over: With GraviTrax, children, young people and adults are not only building simple ball tracks. You create unique ball track worlds. By freely designing the ball tracks and exploring the rolling behavior of the balls, the understanding of science is strengthened and gravity can be experienced at first hand. The GraviTrax Universum contains three exciting lines - CORE, PRO and Power. All GraviTrax lines and products can be combined freely. With innumerable expansions with classical components or stones, which enable special ACTION and tricks, the GraviTrax u